netdev - Re: [PATCH net-next] net: minor: tcp: use tcp_skb_mss helper in tcp_tso

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Date:	Thu, 06 Jun 2013 18:20:43 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Daniel Borkmann <dborkman@...hat.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net: minor: tcp: use tcp_skb_mss helper in
 tcp_tso_segment

On Fri, 2013-06-07 at 02:07 +0200, Daniel Borkmann wrote:
> We have the minimal inline helper tcp_skb_mss to access
> skb_shinfo(skb)->gso_size, so also use it here to get mss.
> 
> Signed-off-by: Daniel Borkmann <dborkman@...hat.com>
> ---
>  net/ipv4/tcp.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
> index b5d4ad9..6a1cf95 100644
> --- a/net/ipv4/tcp.c
> +++ b/net/ipv4/tcp.c
> @@ -2905,7 +2905,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb,
>  	oldlen = (u16)~skb->len;
>  	__skb_pull(skb, thlen);
>  
> -	mss = skb_shinfo(skb)->gso_size;
> +	mss = tcp_skb_mss(skb);

Conceptually, this is part of the GRO/GSO layer.

It would be nice to move this stuff in net/ipv4/tcp_offload.c
to makes things explicit.



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